The question is deliberately ambiguous and that people get different answers is of no surprise.

Quoting: Anonymous Coward 1368046

Misleading information is misleading.

Quoting: Syrius

Seriously,

This is a great thread BTW, it really shows just how stupid many people on here are. The fluoride pills must be working really well. Why are people worried about a little extra radiation if they cant even do arithmetic?

1.) OP posts an initial question2.) Correct answer is given within the first 3 posts3.) Everyone continues to call eachother an idiot, wrong answers are given4.) An argument about the process is discussed5.) Someone goes to google6.) Everyone then switches their answer to what google says7.) The arguing continues on for several more pages

Nice.

Quoting: patmac 1130776

Bottom line, without computers most of them retrun to the stone age...

1.) OP posts an initial question2.) Correct answer is given within the first 3 posts3.) Everyone continues to call eachother an idiot, wrong answers are given4.) An argument about the process is discussed5.) Someone goes to google6.) Everyone then switches their answer to what google says7.) The arguing continues on for several more pages

Answers like this make me wonder how humanity has made it this long without dieing from forgetting to breathe.

The answer, ONLY answer, is 9.

Quoting: Anonymous Coward 1367296

Most people really don't have the need for math, other than very basic addition, subtraction, multiplication and division. Yes, I know that that is what this is, but when written in the form of an equation it gets people confused.

Answers like this make me wonder how humanity has made it this long without dieing from forgetting to breathe.

The answer, ONLY answer, is 9.

Quoting: Anonymous Coward 1367296

Most people really don't have the need for math, other than very basic addition, subtraction, multiplication and division. Yes, I know that that is what this is, but when written in the form of an equation it gets people confused.

For the majority of people it is just not that important in life.

Quoting: Anonymous Coward 1147405

Its actually VERY important for peoples lives, they mostly just have someone else do that math for them, often at an extreme premium.